indoors and spacious is a bit of a challenge. If the weather is good I can suggest walks, but not much indoors

there is a day shelter in the QT building, under Stringray. It can get crowded at lunchtime on cold days but often quite good. The Easy Eats cafe beside the bottom of International is also a day shelter, even if they try to pretend it isn't. ths can also be fairly quiet unless there is good skiing on Inter.

There are cafes that are fine to take kids, but not if the aim is let them work off some energy.

Top tip if you have a pram - there is a lift in QT, from beside Stingray to above mentioned day shelter to beside supermarket

 

My advice is not Falls Creek specific but snow specific.
Get each bub a snowsuit with feet and fold over mittens - example:
https://www.ebay.com.au/itm/Baby-Sk...9e2f:m:mHHv9YO3Wv5XgYebzHuLSXA&frcectupt=true
Be careful - they are slippery little things in these.
Cart them around in a backpack carrier - we had one which could standup by itself so it was a seat as well. Super useful and can be picked up reasonably cheaply second hand eg:
https://www.gumtree.com.au/s-ad/mount-eliza/baby-carriers/child-carrier/1207461911
Rug them up and get out and about. As long as they are warm enough and the weather is ok they will have a great time. How about a snowshoe if the weather is good?

 

If you are up in the Bowl you could take them to the FC Hotel, the lounge area is warm and has room to move, and if they are rugged up there is a nice balcony with views and (usually) king parrots & rosellas. And lunch there is always good.

 

Or if you are staying in Ropers apartments you can use the facilities at Pretty Valley Lodge or pop into Nelse lodge for lunch, they have a bit of room there ..

 

Astra seemed to have a bit of room in their lounge area. Not sure if they are open in the day. You would just need to keep the kids away from the open fire

 

Seats, toilets, shower and I think wifi?
Same at Easy Eats down at Gully which also has a view over the mountains.
If the weather is fine and the kids backpackable, you might take them for a ride in the free shuttle bus up to Windy Corner.

 

Astra is not open during the day.

I must be old fashioned but I think that in cafes kids should stay sitting. Sure, take kids to any of the eating places but not for indoor exercise.

The day shelter at QT is available to all. It has comfy couches and a bit of room to move around but not a lot else. I don't think any one can object to kids being a bit energetic there. You can have cuppas upstairs at Stringray or get take away from The Pass, Snonuts or other stalls nearby.

There is another day shelter in the Resort Management building but it tends to be full of school kids. You could also get the road shuttle up to the Windy Corner day shelter where there is also a cafe.

Most cafes are quiet before about 11am, and again after lunchtime and would be fine for kids who would be happy to sit reasonably quietly.

By the way, the toddlers' toboggan area in the village bowl has been permanently closed. It was determined that it was encouraging too many people to toboggan dangerously in the village, outside the area that had been set aside. Toboggans can no longer be taken on Gully chair. The windy corner toboggan area is still open when conditions permit.